Subnets Affected: 128.32.156.0/24, 128.32.247.0/25, 169.229.14.0/24, 169.229.222.0/23
The code revisions are close, so we expect to be able to perform a hitless upgrade; there should be no perceivable disruption. Nevertheless, I’m scheduling a 45 minute maintenance window (1715-1800) in case of problems.
UPDATE
[2009-05-18 18:00:47 | Mike Howard]
Unfortunately, contrary to the documentation, the upgrade required all the line cards be reset, leading to roughly 1-2 minutes of perceived outage per switch and again for the main router. Also, the 3rd floor switch needed manual intervention to reboot the backup managment module a second time. So much for “hitless” failover. All services are operational.
Resolved as of 2009-05-18 18:00:00